Audio Database


Marantz PM-64 74,000yen(1984 release)

The Integrated Amplifier which inherited the thought corresponding to digital one of PM-84, inherited AVSS, and was refined more.

AVSS (auto voltage shift supply) which shifts output supply voltage according to power is carried, and high power-ization is realized by driving a power element with the output supply voltage which was most suitable for each power from the Koide power to the maximum output, maintaining a quality.

The design corresponding to a low impedance is carried out, and power is maintained even if it changes a speaker impedance to a very low value momentarily.

The direct switchpoint is carried, tone amplifier and a Subsonic Filter can be jumped, and the digital source can be directly sent into power amplifier.
Thereby, a signal path turns into a selector / volume / power amplifier, and the shortest path, and enables the high play of the purity more.

In addition to man-month input, MC input is also carried in playback of an analog disk.

There was sub- wood as an option.

Rating of a mode
Form Integrated Amplifier
Output power 100W+100W (8 ohms, 20Hz - 20kHz)
140W+140W (4 ohms, 1kHz)
Output bandwidth (8 ohms, THD 0.03%) 5Hz - 40kHz
THD (20Hz - 20kHz, 8ohms) 0.015%
Cross modulation distortion 0.015%
Frequency characteristic 20Hz-20kHz+0 -0.3 dB
Dumping factor (8ohms) 100
Input sensitivity/impedance Phono man month: 2.5mV/47kohm
Phono MC: 250 microvolts/100 ohms
Tape, Tuner, Aux, compact-disk:150mV/25kohm
Output load impedance Tape out: 900ohms
RIAA deflection 20Hz-20kHz±0.2dB
SN ratio (IHF-A network) Phono MM:86dB
Phono MC:70dB
Tape, Tuner, Aux, compact disk: 98dB
Phono maximum permissible input MM:140mV
Tone control property Bass: ±10dB (100Hz)
Treble: ±10dB (10kHz)
Subsonic-Filter property 50Hz
Power source 100V, 50/60Hz
Power consumption 230W
Dimensions Width 416x height 136x depth of 334mm
Weight 10.5kg
Option Sub- wood WPM-64 (4,000yen)